In gears, interference takes place when

A. The tip of a tooth of a mating gear digs into the portion between base and root circles

B. Gears do not move smoothly in the absence of lubrication

C. Pitch of the gears is not same

D. Gear teeth are undercut

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  1. The two elements of a pair are said to form a _________ when they permit relative motion between them.
  2. Which of the following statements regarding laws governing the friction between dry surfaces are correct?
  3. A completely constrained motion can be transmitted with.
  4. In a mechanism, usually one link is fixed. If the fixed link is changed in a kinematic chain, then relative…
  5. In which of the following type of gear train the first gear and the last gear are co-axial.
  6. If the pressure angle is __________, a reciprocating follower will jam in its bearings.
  7. The relation between number of links (l) and number of joints (j) in a kinematic chain is
  8. The Klein's diagram is useful to find
  9. The method of direct and reverse cranks is used in engines for
  10. The factional torque for square thread at the mean radius r while raising load W is given by
  11. Ackermann steering gear consists of
  12. In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line…
  13. The Coriolis component of acceleration acts
  14. When the load on the engine increases, it becomes necessary to increase the supply of working fluid…
  15. When the two elements of a pair have __________ when in motion, it is said to a lower pair.
  16. In a simple harmonic motion, the velocity vector with respect to displacement vector
  17. The instantaneous centres which vary with the configuration of mechanism are called
  18. Angle of ascent of cam is defined as the angle
  19. Relationship between the number of links (L) and number of pairs (P) is
  20. In a kinematic chain, a quaternary joint is equivalent to
  21. The velocity of a body moving with simple harmonic motion is __________ at the mean position.
  22. The contact ratio for gears is
  23. The Klein's method of construction for reciprocating engine mechanism
  24. In a Hartnell governor, if a spring of greater stiffness is used, then the governor will be
  25. The unbalanced force due to revolving masses
  26. In a differential band brake as shown in the below figure, the drum rotates anticlockwise and the greater…
  27. When the sleeve of a Porter governor moves downwards, the governor speed
  28. In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line…
  29. A governor is said to be stable, if the
  30. When a point at the end of a link moves with constant angular velocity, its acceleration will have